Reference sites

Meriam-Webster's Learner Dictionary

LearnersDictionary.com

Multiple definitions numbered and separated into paragraphs. Each definition is followed by several examples of the term being used in sentences, as well as common phrases. Students click on the red speaker icon to hear pronunciation for any term.

Kid Thesaurus

KidThesaurus.com

Simple resource for accessing synonyms. Each term has multiple synonym options, with pictures illustrating each term. The words are not used in sentences, however.